Online material

Determination of Teff using the ionization equilibria of N, O, S and C in the FUSE spectrum taken in 2002. The red (thick) lines indicate the pure stellar spectrum, the blue (thin) lines also include the interstellar lines. N iii–iv, O iii–v, S iv–vi and C iii–iv lines are marked.

Determination of the Fe abundance and the upper limit for the Ni abundance. Synthetic spectra calculated from models with 0.1× solar (blue, dashed), solar (green, light) and 10× solar (red, dark) Fe and Ni abundances are compared with the observation.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.